Boston Scientific Ownership | Who Owns Boston Scientific?

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Boston Scientific Ownership Summary

Boston Scientific is owned by 90.08% institutional investors, 0.25% insiders, and 9.67% retail investors. Vanguard group is the largest institutional shareholder, holding 9.42% of BSX shares. Vanguard Total Stock Mkt Idx Inv is the top mutual fund, with 3.17% of its assets in Boston Scientific shares.

BSX Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Boston Scientific	90.08%	0.25%	9.67%
Sector	Healthcare Stocks	246.48%	12.12%	-158.60%
Industry	Medical Device Stocks	52.58%	12.61%	34.81%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Vanguard group	139.69M	9.42%	$13.32B
Blackrock funding, inc. /de	129.68M	8.73%	$5.53B
Vanguard capital management	97.09M	6.54%	$4.14B
State street	70.11M	4.72%	$2.99B
Primecap management co/ca/	50.52M	3.40%	$2.16B
Fmr	45.70M	3.08%	$1.95B
Geode capital management	33.44M	2.25%	$1.42B
D. e. shaw	25.46M	1.71%	$1.09B
Massachusetts financial services co /ma/	24.86M	1.67%	$1.50B
Jpmorgan chase	23.91M	1.61%	$1.04B

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Bollard group	18.42M	23.93%	$786.20M
Prosight management, lp	1.27M	9.34%	$54.22M
Dkrt investments	780.00K	8.13%	$33.29M
Iron triangle partners lp	495.01K	4.87%	$44.21M
Cadian capital management, lp	1.11M	3.57%	$47.17M
Artia global partners lp	183.20K	2.83%	$17.89M
Dg capital management	300.00K	2.70%	$12.80M
Rit capital partners	388.00K	2.67%	$16.56M
Point72 (difc)	408.66K	2.61%	$39.90M
Eagle health investments lp	369.16K	2.61%	$15.76M

Top Buyers

Holder	Shares	% Assets	Change
Norges bank	21.17M	0.09%	21.17M
Primecap management co/ca/	50.52M	1.27%	17.99M
Massachusetts financial services co /ma/	24.86M	0.48%	13.86M
Two sigma investments, lp	19.36M	0.60%	9.95M
Arrowstreet capital, limited partnership	23.29M	0.44%	9.40M

Top Sellers

Holder	Shares	% Assets	Change
Fmr	45.70M	0.08%	-28.52M
Bank of america corp /de/	13.03M	0.04%	-9.73M
Jpmorgan chase	23.91M	0.06%	-9.44M
Edgewood management	-	-	-7.63M
Egerton capital (uk) llp	-	-	-5.39M

New Positions

Holder	Shares	% Assets	Change	Value
Norges bank	21.17M	0.09%	21.17M	$903.54M
Sixth street partners management company	9.22M	0.05%	9.22M	$393.64M
Axa investment managers	2.82M	0.74%	2.82M	$275.01M
Lgt capital partners	915.97K	1.98%	915.97K	$39.09M
Jupiter asset management	848.41K	0.18%	848.41K	$36.64M

Sold Out

Holder	Change
Inlight wealth management	-2.00
Legacy wealth managment, llc/id	-3.00
Mendota financial group	-3.00
West branch capital	-6.00
University of texas/texas am investment managment	-8.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Jun 30, 2026	1,547	-11.75%	1,337,565,287	-0.23%	90	1.10%	733	-14.07%	602	-6.96%
Mar 31, 2026	1,718	-6.98%	1,337,429,778	-1.86%	90	1.06%	837	-6.58%	633	-7.46%
Dec 31, 2025	1,378	-22.50%	903,039,979	-32.58%	60	0.74%	651	-30.30%	521	-5.62%
Sep 30, 2025	1,701	-2.47%	1,323,886,993	2.39%	89	1.17%	897	0.79%	526	-4.71%
Jun 30, 2025	1,717	1.54%	1,345,387,314	2.31%	90	1.15%	882	-0.56%	537	-2.01%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
Vanguard Total Stock Mkt Idx Inv	47.19M	3.17%	-43.23K
Vanguard Morn Total Stk Mkt Idx Investor	47.19M	3.17%	-43.23K
Vanguard MStar Total Stk Mkt Idx Invest	46.00M	3.17%	-1.23M
Vanguard US Total Market Shares ETF	46.63M	3.16%	62.58K
Vanguard 500 Index Investor	38.05M	2.63%	-1.44M
Vanguard PRIMECAP Inv	30.88M	2.13%	9.82M
iShares Core S&P 500 ETF	19.31M	1.33%	-31.08K
Fidelity 500 Index	19.29M	1.33%	74.11K
SPDR® S&P 500 ETF	18.33M	1.24%	-268.46K
State Street® SPDR® S&P 500® ETF	17.75M	1.22%	-

Recent Insider Transactions

Date	Name	Role	Activity	Value
Aug 25, 2026	Morano Susan E	-	Buy	$100.41K
Aug 05, 2026	Habiger David C	-	Buy	$99.94K
Aug 04, 2026	Habiger David C	-	Buy	$6.80K
Aug 03, 2026	Habiger David C	-	Buy	$50.08K
Aug 03, 2026	Mahoney Michael F	Chairman, President & CEO	Buy	$9.00M

Insider Transactions Trends

Date	Buy	Sell
2026 Q3	6	-
2026 Q2	4	-
2026 Q1	-	2
2025 Q4	-	9
2025 Q3	-	7

BSX Ownership FAQ

Who Owns Boston Scientific?

Boston Scientific shareholders are primarily institutional investors at 90.08%, followed by 0.25% insiders and 9.67% retail investors. The average institutional ownership in Boston Scientific's industry, Medical Device Stocks, is 52.58%, which Boston Scientific exceeds.

Who owns the most shares of Boston Scientific?

Boston Scientific’s largest shareholders are Vanguard group (139.69M shares, 9.42%), Blackrock funding, inc. /de (129.68M shares, 8.73%), and Vanguard capital management (97.09M shares, 6.54%). Together, they hold 24.69% of Boston Scientific’s total shares outstanding.

Does Blackrock own Boston Scientific?

BlackRock is not among the top 10 institutional shareholders of Boston Scientific.

Who is Boston Scientific’s biggest shareholder by percentage of total assets invested?

Bollard group is Boston Scientific’s biggest shareholder by percentage of total assets invested, with 23.93% of its assets in 18.42M Boston Scientific shares, valued at 786.2M$.

Who is the top mutual fund holder of Boston Scientific shares?

Vanguard Total Stock Mkt Idx Inv is the top mutual fund holder of Boston Scientific shares, with 3.17% of its total shares outstanding invested in 47.19M Boston Scientific shares.

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